Synthesis, characterization, and thermal analysis of ternary complexes of nitrilotriacetic acid and alanine or phenylalanine with some transition metals

Ternary complexes of Co(II), Ni(II), Cu(II), and Zn(II) with nitrilotriacetic acid as a primary ligand and alanine or phenylalanine as secondary ligand were prepared in slightly acidic medium. The structures of the complexes were elucidated using elemental, IR, molar conductance, magnetic moment, UV...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2010-07, Vol.101 (1), p.129-135
Main Authors: Khalil, Mostafa M. H., Ismail, Eman H., Azim, Shaimaa Abdel, Souaya, Eglal R.
Format: Article
Language:English
Subjects:
Alanine
Analysis
Analytical Chemistry
Chemical properties
Chemistry
Chemistry and Materials Science
Cobalt
Coordination compounds
Exact sciences and technology
Inorganic Chemistry
Inorganic chemistry and origins of life
Ligands
Measurement Science and Instrumentation
Molecular structure
Nitrilotriacetic acid
Phenylalanine
Physical Chemistry
Polymer Sciences
Preparations and properties
Spectra
Thermal analysis
Transition metals
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Summary:Ternary complexes of Co(II), Ni(II), Cu(II), and Zn(II) with nitrilotriacetic acid as a primary ligand and alanine or phenylalanine as secondary ligand were prepared in slightly acidic medium. The structures of the complexes were elucidated using elemental, IR, molar conductance, magnetic moment, UV–Vis spectrophotometry, and thermal analyses. The ternary complexes were isolated in 1:1:1 (M:HNTA:alaH) ratios, and the molecular structures were found to be [M(HNTA)(alaH)(H 2 O) 2 ]. Thermogravimetric analysis confirmed this structure and that the water present is coordinated to the central metal atom. UV–Vis spectra showed that the complexes have octahedral symmetry.
ISSN:1388-6150
1588-2926
DOI:10.1007/s10973-010-0740-x